نتایج جستجو برای: altitudinal gradient

تعداد نتایج: 127976  

Journal: :The American naturalist 2002
John Arvid Grytnes Ole R Vetaas

We compare different null models for species richness patterns in the Nepalese Himalayas, the largest altitudinal gradient in the world. Species richness is estimated by interpolation of presences between the extreme recorded altitudinal ranges. The number of species in 100-m altitudinal bands increases steeply with altitude until 1,500 m above sea level. Between 1,500 and 2,500 m, little chang...

2016
Tomáš Dostálek Maan Bahadur Rokaya Petr Maršík Jan Rezek Jiří Skuhrovec Roman Pavela Zuzana Münzbergová

The type and intensity of plant-herbivore interactions are likely to be altered under climate change as a consequence of differential dispersal rates of plants and their herbivores. Here, we studied variation in herbivore damage on Salvia nubicola in the field and compared its growth and defence strategies against herbivores in controlled conditions using seeds from populations along a broad al...

2016
Susan G Jarvis Steve Woodward Andy F. S. Taylor James Hutton Susan Jarvis

altitudinal partitioning in the distributions of ectomycorrhizal fungi along a short (300 m) elevation gradient. The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner.

2013
Manuel Hernando Bernal John D. Lynch

Anurans are ectothermic animals very sensitive to temperature, mainly during the embryonic stage. In addition, environmental temperature decreases with altitude, and the amphibian fauna changes. Therefore, we studied the relationship between the embryonic thermal tolerances of twelve species of anurans and the temperatures of their microhabitat along an altitudinal gradient from 430 m to 2600 m...

2013
Krzysztof Piksa Jakub Nowak Michał Żmihorski Wiesław Bogdanowicz

BACKGROUND Thermal gradients along changes in elevation in mountainous environments are reflected by different biotas. Although there have been studies of elevation variation in bat assemblages in summer, winter changes in the same gradients remain unknown. METHODOLOGY/PRINCIPAL FINDINGS The objective of this study was to document changes in the species composition of bats hibernating in cave...

2017
Xiaoyu Wang Dapao Yu Bernard J. Lewis Wangming Zhou Li Zhou Limin Dai Jing-Pin Lei Mai-He Li

Height-diameter relationship is one of the most important stature characteristics of trees. It will change with climatic conditions because height and diameter growth displays different sensitivities to climatic factors such as temperature. Detecting and understanding changes in the stature of trees growing along altitudinal gradients up to their upper limits can help us to better understand th...

Journal: :Biodiversitas Journal of Biological Diversity 1970

Journal: :Frontiers in Ecology and Evolution 2022

Understanding patterns of species diversity along an altitudinal gradient is the major topic much biogeographical and ecological research. The aim this study was to explore how richness density orchid subspecies in terms different categories underground organ systems pollination vary central Balkans. area divided into 21 100-m vertical intervals. Data were analyzed using both non-linear linear ...

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